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W. @IBROWNB AUTOMATIG GUT-OFF. l

No. S80-,987. Patented Apr". 101,2'1888.-

INVENTOR:

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W. G. BROWNE. AUTOMATIC GUT-OPP. No. 380,987. Patented Apr. 10, 1888.

Walker' E :BITm/me- NTE' ATES PATENT trice.

VALKER G. BROWNE, OF ATLANTA, GEORGIA, ASSIGNOR TO THE UNITED STATES AUTOMATIC VATER OUT-OFF COMPANY, OF GEORGIA.

AUTOMATIC CUT-IOFF..

SPECIFICATION forming part of Letters .Patent No. 380,987l dated April 10, 1888. Application tiled March 15, 1887. Serial No. 231.039. (No model.)

To all when?, it may concern.-

Be tknown that l, WALKER G. BRowNE, a citizen of the United States, residing at Atlanta, in the county of Fulton and State of Georgia, have invented a new and useful Automatic Cut-Off for lVateriPipes; and I do hereby declare the following to be a full,-clear, and exact description of the invention, such as will enable others skilled in the art to which 1o it appert-ains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,wl1ich form apart of this specitlcation. This invention relates to the automatic cutt5 ting off of the flow of waterin water-pipes and draining the water beyond the cutoif valve from them on the lowering ofthe temperature, to prevent the freezing of the water in the pipes; and itconsists of aself-closing stop and 2c waste valve and restraining mechanism, with compound plate to automatically release the same, and draining-valves that are operated by the water that is discharged by the stop and waste valve, as will be hereinafter fully 2 5 described.

In the accompanying drawings, Figure l is a side View, partlyin section, showing the compound plates, restraining catch and rod, and the valve andthe chain for opening thevalve. Fig. 2 is a cross-section on lineman, Fig. l. Fig. 3 is an enlarged view of the restraining catch,lever, and rod. Fig. 4 is an end view of the lever. Fig. 5 is a view of my device as used in practice in a basement, showing a stop and waste valve and actuatingA mechanism, and drainingyalves, and bucket-weights, by which the valves are opened whenever the buckets are filled with water from the stop and waste valve. Fig. 6 is an enlarged sectional view of the pipes by which the bucketweights on the draining-valves are iilled, and having a contracted discharge-opening, by rea- -son of which the water may be made to ow through several openings at the same time.

In the tigures, like reference-marks referring to like parts, A is a water-supply pipe, on which is a stop and Waste valve, B, having lever b and weight C. The valve, as shown7 is open and allows the water to flow through 5o it, and the weight O is held in this position by `the engagement of the catch d on the lever D with the restraining-rod c, Figs. l and 3. The restraining-rod is caused,on the raising of the weight O by the chain d, to engage with the catch d by the spring d', which bears against 55 one side of the opening in the base-plate, through which the restrainiugrcd passes.

` The lever D is pivoted on the pin e in an upward projection ou the base-plate E, and the end opposite the catch d is held down by coutact with the catch f on the compound plate F. The compound plate, being constructedof strips of metal having different expansive qualities, will by the contraction produced by cold release the end of the lever D with which itis in contact and allow the weight to pull the catch down sufficiently to cause the restraining-rod to slip off the catch and allow the weight to close the valve.

It will be observed by Figs. ll and 3 that the 7o downward motion of the catch carries it backwardly and forcibly withdraws it from the hole in the restrainingrod c,- the rod being prevented from following the catch by contact with the lever. Vhen the weight O drops, it will carry the restraining-rod with it, by reason of which the spring ol' will not bear against the baseplate, butwill allow the lever and catch to fall to the position shown, where they will be held by the compound plate 8o whenever a return ofahighertemperature shall have expanded them, after which, the weight C having been raised bythe chain, the catch d will engage with the restraining-rod and hold it, thus allowing the water to flow.

The adjusting-screw f in the compound plate, Fig. l, is for the purpose of adjusting the catchfcn the free end of the compound plate, to cause it to release the lever D on the falling of the temperature to the degree at 9o which itis desired to cut off the water. As the lever D will not be held by the compound plate in the position in which it will sustain the weight and hold the valve open until a rise of temperature shall have caused it to engage with the lever, the opening of the valve by raising the weight will not allow the water to flow longer than the valve is held open by means other than the lever D.

The stopping of the forward flow of water 10o by the stop and waste valve B will cause the backward dow and discharge of such water as shall have passed through the valve and is still in the pipes and at a higher level than this outlet. It is, however, often found that eX- posed portions of the pipe are at a lower level than the stop and waste valve, or otherwise prevented from draining backwardly through that valve. Such portions of the pipes I drain by attaching waste-valves G and H, as shown in Fig. 5, to the lowest or any desirable parts of the pipes. To the levers of these wastevalves are attached vessels Jand K, of sufficient size to contain enough weight of water to open these valves. On the closing of the `valve B whatever water shall remain in the pipe A above that level will be discharged through the wasteport inthe valve B into the pipe L, through which it will flow and discharge a portion into the vessel J and a portion into the vessel K, the outlets or other portions of the pipes being contracted, as shown in Fig. 6, to prevent the discharge of all of the water at one outlet. It is obvious that in some instances only one of the supplemental valves need be used,while in others more than two might be required; but I have shown this system of pipes as applied to two openings, as I believe it sufficiently illustrates the principle of that part of my invention. rll-he compound plates shown in Figs 1, 2, Land 3 are similar to those shown in my Patent No. 351,093, of October 9, 1886, except that instead of hinges to `join the central pair of plates I use U -shaped strips of metal, g, the strips 1 4 5 8 being of a metal which contracts or expands to a greater extent as the temperature rises or falls than those marked 2 3 6 7. Ou the contracting by cold of plate l the compound plate composed of plates 1 and 2 will bend or bow in the direction indicated bythe arrow x. The compound plates composed of to moving which is done in the direction of the arrow Z; but I believe that other forms of compound plate might be used without a departure from the principle of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. The combination of the compound plate 1 2 3 4, the support to which they are fastened, the U shaped elastic spring joining said plates, the springf, the serewf, ythe lever D, the bolt e, the catch d, the rod c, and the spring d', substantially as set forth.

2. The compound plates 1 2 3 4, the lever D, the catch d, and the rod o, in combination with the weight C, the lever b, valve B, and chain c'.

In testimony whereof I affix my signature in presence of two witnesses.

. VALKER G. BROWN E.

Witnesses:

MAX BAYENsnoREEn, VALENTINE HALE. 

